"Conquering Complexity by Augmenting the Human Intellect: Douglas C. Engelbart," by Patricia Seybold, published in Patricia Seybold's Guide to the Information Revolution, or P.S. Post Script on Information Technology, April 1980, Vol. 2, No. 4, ISSN 1041-4630. EXCERPT from Patricia's Preface on the Roots of Groupware: "The place to start is over 30 years ago, when Doug Engelbart committed himself to improving our ability to handle complexity. Engelbart is the father of personal computing, professional computing, and collaborative work among professionals. In this issue, we learn about the tools he has designed and used to support collaborative knowledge work. We hear about the invention of the mouse, and the world's first personal computer, and about the origins and implementations of hypermedia structured documents, multiple-window displays, video-conferencing, and the development of a knowledge base."